A hollow aluminum shaft with an outside diameter of 80 mm and a wall thickness of 4 mm has an allowable shear stress of 80 MPa. Determine the maximum torque T that may be applied to the shaft.

The value of maximum torque applied on the shaft   = 2764.4 N - mm

Explanation:

Outside diameter D = 80 mm

Thickness = 4 mm

Inside diameter d = 80 -2 × 4 = 72 mm

Allowable shear stress Z = 80 M Pa

Now the value of maximum torque is given by

Put all the values in above formula we get

⇒ =   ×

⇒ = 2764.4 N - mm

This is the value of maximum torque applied on the shaft.

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explanation:

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the amount of current in the coil